Thomas left Home Improvement one season before it ended its run to focus on his academics. After that, he appeared sporadically on a handful of TV shows including Smallville, 8 Simple Rules and most recently Veronica Mars back in 2005. Earlier this season on Last Man Standing,Home Improvement's Richard Karn guest-starred as an architect working with Allen's character.

Last Man Standing airs Fridays at 8/7c on ABC. Are you excited to see TV father and son back together?